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10 kV配电网架空线路设计要点分析

设备监理 2024年第1期 56-59页

作者：蔡俊明福州万山电力咨询有限公司福州363005

本文对10 kV配电网架空线路的设计要点进行了深入分析和研究。从设计前的准备工作、可研初设一体化设计、施工图设计3个方面详细阐述了10 kV配电网架空线路设计的内容;架空线路的设计需要考虑气象条件、杆塔选型、导线选用、柱上设备选... 详细信息

本文对10 kV配电网架空线路的设计要点进行了深入分析和研究。从设计前的准备工作、可研初设一体化设计、施工图设计3个方面详细阐述了10 kV配电网架空线路设计的内容;架空线路的设计需要考虑气象条件、杆塔选型、导线选用、柱上设备选择以及防雷与接地设计等因素,设计过程中需要充分考虑线路的稳定性、安全性等,以提高整体电力供应的可靠性、稳定性和经济性。

关键词： 10 kV 配电网架空线路设计要点气象条件

10 kV配电线路带电作业危险点及预控措施分析

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科技资讯 2024年第15期22卷 196-198页

作者：阿布都吉利力·艾海提袁莉陈孟国网伊犁伊河供电有限责任公司新疆伊宁835000

10 kV配电线路是城市与农村电力供应的重要组成部分,但带电作业存在严重的安全隐患。通过讨论10 kV配电线路带电作业的危险性及预防措施,指出了带电作业预控在保障人员安全、降低事故发生概率、提高作业效率和确保电力系统稳定运行方面... 详细信息

10 kV配电线路是城市与农村电力供应的重要组成部分,但带电作业存在严重的安全隐患。通过讨论10 kV配电线路带电作业的危险性及预防措施,指出了带电作业预控在保障人员安全、降低事故发生概率、提高作业效率和确保电力系统稳定运行方面的必要性,分析了10 kV配电线路带电作业的主要危险点,如触电风险、高空作业风险等,提出加强培训、严格现场勘查、增强安全防护、注重工具管理和制订应急预案等一系列预控措施。

关键词： 10 kV 配电线路带电作业危险点预控措施

10 kV配电网智能化技术在线路故障处理方面的应用探究

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科技资讯 2024年第17期22卷 100-102,106页

作者：许胜国网利川市供电公司凉雾供电所湖北利川445400

提出了10 kV配电网智能化技术在线路故障诊断的应用方案。基础层由传感器、终端设备及通信网络组成,系统层面由10 kV配电网智能化技术主要有数据存储系统、控制中心系统、线路故障检测用户界面程序,系统可对多源异构线路数据进行无缝连... 详细信息

提出了10 kV配电网智能化技术在线路故障诊断的应用方案。基础层由传感器、终端设备及通信网络组成,系统层面由10 kV配电网智能化技术主要有数据存储系统、控制中心系统、线路故障检测用户界面程序,系统可对多源异构线路数据进行无缝连接与整合,通过对传感器、监测点的数据形成统一数据集处理,实现对线路各节点的归一化处理。通过传感器及时识别10 kV配电网线路运行故障,并将故障上传至10 kV配电网移动终端,通过数据模型确定10 kV配电网线路故障点位后进行远程操作,提高10 kV配电网线路故障处理效率。

关键词： 10 kV配电网智能化技术线路故障故障处理

10kV电力配网工程施工技术问题与处理对策分析

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科技资讯 2024年第19期22卷 96-98页

作者：赵骞国网江苏省电力有限公司扬州供电分公司江苏扬州225000

随着在技术不断发展,电力体系更加健全,其中,配网项目作为电力系统施工中的关键内容,对技术应用标准较高。一方面,要保障方案的适宜度,强化其可行性;另一方面,应科学实施技术管理,防止短路或外部因素引发的异常。鉴于此,将重点围绕10 k... 详细信息

随着在技术不断发展,电力体系更加健全,其中,配网项目作为电力系统施工中的关键内容,对技术应用标准较高。一方面,要保障方案的适宜度,强化其可行性;另一方面,应科学实施技术管理,防止短路或外部因素引发的异常。鉴于此,将重点围绕10 kV电力配网工程技术运用问题及处理对策开展研究,以期为相关人士提供借鉴。

关键词： 10 kV 电力配网项目施工技术问题施工方案

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The separation and recovery of copper(Ⅱ), nickel(Ⅱ), cobalt(Ⅱ), zinc(Ⅱ),and cadmium(Ⅱ) in a sulfate-based solution using a mixture of Versatic 10 acid and Mextral 984H

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Chinese Journal of Chemical Engineering 2017年第6期25卷 760-767页

作者： Yinxuan Qiu Limei Yang Songtao Huang Zhongguang Ji Yan Li National Engineering Laboratory of Biohydrometallurgy General Research Institute for Non-Ferrous Metals Beijing 100088 China

We studied the separation and recovery of copper(Ⅱ), nickel(Ⅱ), cobalt(Ⅱ), zinc(Ⅱ), and cadmium(Ⅱ) from magnesium and calcium, using synergistic solvent extraction(SSX) in a typical hydrometallurgical waste solution. A mixture of Versatic 10 acid and Mextral 984 H, diluted with Mextral DT100, was used to obtain fundamental data on p H and distribution isotherms, as well as the kinetics of extraction and stripping. We also investigated the main effects and interactions of common solvent extraction factors: the extraction p H at equilibrium, the temperature, and the extractant concentration. The synergistic effect for extracting metals was confirmed. The results showed that the addition of Mextral 984 H enhanced the separation factors of copper, nickel, cobalt,zinc, and cadmium over magnesium and calcium. Compared with Versatic 10 acid alone, for a mixture of0.5 mol·L^(-1) Versatic 10 acid/0.5 mol·L^(-1)Mextral 984 H, Δp H50 values of copper, nickel, cobalt, zinc, and cadmium were found to be N 2.0, 3.30, 2.85, 0.95, and 1.32 p H units, respectively. The Δp H_(50)(Zn–Mg)and Δp H_(50)(Zn–Ca)values were 3.27 and 2.25, respectively, indicating easy separation and recovery of copper, nickel, zinc, cobalt,and cadmium. The extraction and stripping of copper, cobalt, zinc, and cadmium were fast, with 90% of the metal transferred in 2 min. We next studied whether the metals could be stripped from the extracted liquid selectively in sequence, by using sulfuric acid at different concentrations. The influence of the molecular structure of the oxime and carboxylic acid components upon the synergistic effects was identified by numerical *** separation of copper, nickel, cobalt, and zinc over magnesium and calcium was achieved with this synergistic solvent extraction system.

关键词： Water treatment Solvent extraction Versatic 10 acid Mextral 984HRecovery

Complex method of the plane elasticity in 2D quasicrystal with point group 10 mm tenfold rotational symmetry and holey problems

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Science China(Technological Sciences) 2003年第3期46卷 326-336页

作者：刘官厅范天佑 School of Science Beijing Institute of Technology

The complex method of the plane elasticity in 2D quasicrystal with point group 10 mm tenfold rotational symmetry is established. First displacement potential function in the quasicrystal is represented by four analytic functions. Then by utilizing the properties of analytic function and through a great deal of derivation, the complex representations of stresses and displacementscomponents of phonon fields and phason fields in the quasicrystal are given, which are the theo-retical foundation for this method. From this theory, and by the help of conformal transformations in the theory of complex function, the problems of elliptic hole in the quasicrystal are solved. Its spe-cial cases are the solutions of well-known crack problem. Meanwhile, the results show that even if under the self-counterbalance force in the quasicrystal plane with elliptic hole, the stress compo-nents of phonon fields are also related to material constants of the quasicrystal when the phonon fields and phason fields are coupled, which is another distinctive difference from the properties of classical elastic theory. Besides, the present work is generalization and application of the complex method in the classical elastic theory established by Muskhelishvili to 2D quasicrystal. As in the classical elastic theory, if only conformal transformation from the quasicrystal plane to unit circle isfound, any holey and crack problem in the quasicrystal plane could be solved.

关键词： point group 10 mm, 2D quasicrystal, plane elasticity, conformal transformation, elliptic hole.

Study of spatial distribution of sandy desertification in North China in recent 10 years

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Science China Earth Sciences 2004年第Z1期47卷 78-88页

作者： WANG Tao, WU Wei, XUE Xian, SUN Qingwei & CHEN GuangtingKey Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China Department of Environment Engineering, Peking University, Beijing 100871, China Key Laboratory of Desert and Desertification Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China Department of Environment Engineering Peking University Beijing China

Sandy desertification is a land degradation characterized by wind erosion, mainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regions in North China. It is one of main kinds of desertification/land degradation as well as water-soil erosion and salinization in China. Rapid and continuous spread of sandy desertification during last 50 years has created a major environmental and socio-economic problem in North China. Remote sensing monitored results in 2000 showed that the sandy desertified land area has been 38.57× 104 km2. The area of potential to slightly sandy desertified land is 13.93× 104 km2, moderately land 9.977×104 km2, severely land 7.909 ×104 km2 and very severely land 6.756×104 km2. Sandy desertification mainly occurs in the semi-arid mixed farming-grazing zone and its northern rangeland zone, semi-arid dryland rainfed cropping zone and arid oasis-desert margin zone. The average annually developmental rate of sandy desertified land increased from 2,100 km2 ·a-1 in 1976-1988 to 3,600 km2 · a-1 in 1988-2000. The basic status of sandy desertification in North China is 'overall deterioration, while local rehabilitation'. Already achieved rehabilitation results and monitoring assessment show that about 60% of desertified land in North China can be restored under the conditions of rational land-use ways and intensity.

关键词： sandy desertified land, spatial distribution, remote sensing monitoring, last 10 years, North China.

4×10Gb/s 800 km transmission system on G.652 fiber with dispersion compensation by chirped FBG

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Science China(Technological Sciences) 2002年第6期45卷 661-665页

作者：简水生延凤平李唐军简伟裴丽宁提纲 Light-wave Technology Institute Northern Jiaotong University Beijing 100044 China

In this paper, the dispersion compensation of 4×10Gb/s 800km G.652 fiber by chirped optical fiber Bragg grating (FBG) was originally implemented. The characteristics of FBG are optimized, so that the ripple coefficient of reflectivity and time delay are less than 0.9dB and 30ps, respectively. When BER is 10?10, the power penalties of transmission are 1.36 dB, 0.89 dB, 1.67 dB and 1.32 dB.

关键词： 10 Gb/s, optical fiber grating, dispersion compensation, power penalty.

Hole transporting material 5,10,15-tribenzyl-5Hdiindolo[3,2-a:3',2'-c]-carbazole for efficient optoelectronic applications as an active layer

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Chinese Physics B 2015年第2期24卷 428-431页

作者：郑燕琼 William J.Potscavage Jr 张建华魏斌黄荣娟 Key Laboratory of Advanced Display and System Applications Ministry of EducationShanghai University Center for Organic Photonics and Electronics Research(OPERA) and International Institute for Carbon Neutral Energy Research(WPI-I2CNER) Kyushu University

In order to explore the novel application of the transparent hole-transporting material 5,10,15-tribenzyl-5Hdiindolo[3,2-a：3＇,2＇-c]-carbazole（TBDI）,in this article TBDI is used as an active layer but not a buffer layer in a photodetector（PD）,organic light-emitting diode（OLED）,and organic photovoltaic cell（OPV） for the first ***,the absorption and emission spectra of a blend layer comprised of TBDI and electron-transporting material bis-（2-methyl-8-quinolinate） 4-phenylphenolate（BAlq） are *** on the absorption properties,an organic PD with a peak absorption at 320 nm is fabricated,and a relatively-high detectivity of 2.44×10^（11） cm· Hz^（1/2）/W under 320-nm illumination is *** TBDI/tris（8-hydroxyquinoline） aluminum（Alq_3） OLED device exhibits a comparable external quantum efficiency and current efficiency to a traditional 4,4-bis[N-（l-naphthyl）-N-phenyl-amino]biphenyl（α-NPD）/Alq_3 OLED.A C_（70）-based Schottky junction with 5 wt%-TBDI yields a power conversion efficiency of 5.0%,which is much higher than 1.7%for an α-NPD-based junction in the same *** results suggest that TBDI has some promising properties which are in favor of the hole-transporting in Schottky junctions with a low-concentration donor.

关键词： 5 10 15-tribenzyl-5H-diindolo[3 2-a:3' 2'-c]-carbazole photodetector organic light-emitting diode Schottky junction